.bd{
    margin-top: 7px;
}
.main_content{
    border: 1px solid #000000;
    border-radius: 3px;
    background: #ffffff;
}
.article_list{
    margin-top: 40px;
    padding-left: 20px;
    background: #ffffff;
}
.article_list header{
    margin-top: 20px;
    border-bottom: 3px solid #000000;
    font-size: 18px;
    font-weight: bold;
}
.article_list header span:first-child{
    background: #ff0a05;
    color: #ffffff;

}
article{
 /*   border: 1px solid #000000;*/
 }
.bd .main_content{
    margin: 0 300px;
}
.auth-span{
   text-align: center;
    margin: 20px 0;
}
.muted{
    display: inline-block;
    margin-left:25px ;
    height:17px ;
    color: #000000;
}
.muted a{
    text-decoration: none;
    color: #000000;
}
.content{
    line-height: 30px;
    padding: 0 10px;
    margin:20px 10px  ;

}
.content a{
    float: left;
    margin-right: 20px;
    overflow: hidden;
}